If Smart Async Sync is not used, which Cisco SD-WAN component is used to upload an authorized serial number file?

WAN Edge is the data plane device being authorized - it cannot upload its own authorization file.

vManage is the centralized management plane in Cisco SD-WAN and handles all administrative tasks including uploading the authorized serial number file used to validate and onboard WAN Edge devices. When Smart Async Sync (automated synchronization with Cisco PnP) is not used, an administrator must manually obtain the serial file from cisco.com and upload it directly to vManage via the GUI or API.

vSmart is the control plane responsible for routing policy distribution via OMP, not device authorization.

vBond is the orchestration plane that authenticates devices once they are already authorized, not the component that stores or uploads the serial file.